Home / 15,141.39-20,885.36-9,770.68

Finding the Fourth Proportional to 15,141.39, 20,885.36 and 9,770.68

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Solution

The fourth proportional to 15,141.39, 20,885.36 and 9,770.68 is: 13,477.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.39 : 20,885.36 = 9,770.68 : x
  2. Step 2: Convert to fraction form
    15,141.39/20,885.36 = 9,770.68/x
  3. Step 3: Cross multiply
    15,141.39x = 20,885.36 × 9,770.68
  4. Step 4: Simplify right side
    15,141.39x = 204,064,169.24
  5. Step 5: Solve for x
    x = 204,064,169.24/15,141.39
  6. Step 6: Final answer
    x = 13,477.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.